Why is it called Street Fighter?

Could you please clarify for me the origins of the name 'Street Fighter'? I'm quite curious about the reasoning behind such an intriguing title. It seems to evoke images of urban combat and street battles, but I'm not entirely sure if that's the intended meaning. Is it a reference to the game's combat style, or perhaps a nod to its setting? Or could it be something entirely different? I'm eager to understand the significance of this moniker and how it ties into the overall theme and feel of the game. Thank you for your assistance in shedding some light on this matter.